| GPGi Plastek LTD | Newburyport, City of | MA | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| GWGip Wakefield LLC Dba | Needham | MA | Furniture and Related Product Manufacturing337212 | — | ◇ UNVERIFIED |
| GSGkn Sinter Metals INC | Worcester | MA | Primary Metal Manufacturing331111 | — | ◇ UNVERIFIED |
| GCGlobal Composite Solutions LTD | Stoughton | MA | Printing and Related Support Activities323117 | — | ◇ UNVERIFIED |
| GEGlobal Experience Specialists | Avon | MA | Miscellaneous Manufacturing339950 | — | ◇ UNVERIFIED |
| GMGlobe Mfg CO | Fall River | MA | Textile Mills313210 | — | ◇ UNVERIFIED |
| GNGlobe Newspaper CO | Boston | MA | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| GIGl&v Impco-jones | Pittsfield | MA | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| GUGl&v USA INC | Lenox | MA | Machinery Manufacturing333243 | — | ◇ UNVERIFIED |
| GVGoddard Valve CORP | Worcester | MA | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| GIGooby Industries CORP. | Methuen | MA | Paper Manufacturing322212 | 100-499 | ◇ UNVERIFIED |
| GGGoodway Graphics INC | Burlington | MA | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| GOGortons of Gloucester | Gloucester | MA | Food Manufacturing311710 | — | ◇ UNVERIFIED |
| GSGortons Seafood Center | Gloucester | MA | Food Manufacturing311710 | — | ◇ UNVERIFIED |
| GIGotham Ink of New England | Marlborough | MA | Chemical Manufacturing325910 | — | ◇ UNVERIFIED |
| GFGraniteville Foundry | Westford | MA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| GAGraphic Arts Finshers INC | Boston, City of | MA | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| GLGraphic Litho | Lawrence | MA | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| GSGraphic Services | Rockland | MA | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| GCGraves Concrete | East Templeton | MA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| GBGreif Bros CORP | Mansfield | MA | Paper Manufacturing322214 | — | ◇ UNVERIFIED |
| GFG&w Foundry | Rehoboth | MA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| HDHano Document Printers INC | Springfield | MA | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| HKHardwick Knitted Fabrics | Warren | MA | Textile Mills313241 | — | ◇ UNVERIFIED |
| HAHaskon Aerospace Div Kirkhill-ta | Taunton | MA | Plastics and Rubber Products Manufacturing326291 | — | ◇ UNVERIFIED |
| HSHassay Savage | Turners Falls | MA | Fabricated Metal Product Manufacturing332216 | — | ◇ UNVERIFIED |
| HPHaverhill Paperboard | Haverhill | MA | Paper Manufacturing322110 | — | ◇ UNVERIFIED |
| HCHaviland Candy | Cambridge | MA | Food Manufacturing311340 | — | ◇ UNVERIFIED |
| HPHazen Paper CO | Holyoke | MA | Paper Manufacturing322220 | — | ◇ UNVERIFIED |
| HCHba Cast Products Company | Springfield | MA | Primary Metal Manufacturing331521 | — | ◇ UNVERIFIED |
| HFHeat Fab INC | Turners Falls | MA | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| HMHeidelberg Materials US Cement LLC | Palmer | MA | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| HCHeinrich Ceramic Decal | Worcester | MA | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| HPHewlett Packard CORP | Andover | MA | Computer and Electronic Product Manufacturing334111 | — | ◇ UNVERIFIED |
| HTHigh Tech Asemblies | Lowell | MA | Machinery Manufacturing333998 | — | ◇ UNVERIFIED |
| HHHilco-the Hilsinger Company | Plainville | MA | Miscellaneous Manufacturing339115 | — | ◇ UNVERIFIED |
| HBHoffs Bakery | Malden | MA | Food Manufacturing311812 | 100-499 | ◇ UNVERIFIED |
| HCHolyoke Card Company | Springfield | MA | Paper Manufacturing322220 | — | ◇ UNVERIFIED |
| HSHoneywell Sensing and Control | Acton | MA | Computer and Electronic Product Manufacturing334419 | — | ◇ UNVERIFIED |
| HGHopwood Globe LTD | Malden | MA | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| HMHoyt Mfg CORP | Westport | MA | Machinery Manufacturing333310 | — | ◇ UNVERIFIED |
| HFHub Fabric Leather Company Incorporated | Everett | MA | Textile Mills313320 | — | ◇ UNVERIFIED |
| HMHudson Mill LLC | Hudson | MA | Electrical Equipment, Appliance & Component Manufacturing335929 | — | ◇ UNVERIFIED |
| HPHudson Poly Bag Incorporated | Hudson | MA | Plastics and Rubber Products Manufacturing326111 | — | ◇ UNVERIFIED |
| HIHybripak INC (former) | Avon | MA | Computer and Electronic Product Manufacturing334419 | — | ◇ UNVERIFIED |
| IBIbc-my Bread Baking CO | New Bedford | MA | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| IPIdenix Pharmaceuticals INC | Cambridge | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| IBIggys Bread of the World | Cambridge | MA | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| IAImi Adaptas | Palmer | MA | Computer and Electronic Product Manufacturing334516 | — | ◇ UNVERIFIED |
| IFIncom Fiberoptics | Charlton | MA | Nonmetallic Mineral Product Manufacturing327215 | — | ◇ UNVERIFIED |
